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Microsoft 365 Outage Hits North America as CDN Misconfiguration Disrupts Multiple Services

## Microsoft 365 Service Disruption in North America

RBy Rebecca StoneMar 06, 20262 min read

Microsoft 365 Service Disruption in North America

Microsoft is currently investigating a service disruption affecting multiple Microsoft 365 products for users in the North American region. The issue is suspected to be linked to Content Delivery Network (CDN) configuration problems.

The incident commenced on Mon, Mar 6, 2026, and remains under active investigation. Users across North America have reported access issues with various Microsoft 365 services, including the Microsoft 365 Admin Center, impacting IT administrators' abilities to manage users, monitor security, or access service health dashboards.

Mar 6, 8:51 PM IST: Initial acknowledgment of service disruption in North America. Mar 6, 9:16 PM IST: Engineers began reviewing service monitoring telemetry for Admin Center access. Mar 6, 9:39 PM IST: Continued investigation into impacted services. Mar 6, 9:56 PM IST: Focus shifted to CDN configuration as the probable source.

CDN Configurations Under Investigation

The investigation has specifically focused on CDN configurations as the potential trigger. The Office 365 CDN is responsible for distributing static assets and enhancing content delivery across Microsoft's global infrastructure. Misconfigurations at this level can lead to widespread service unavailability across dependent products.

Microsoft is currently investigating a service disruption affecting multiple Microsoft 365 products for users in the North American region.
Rebecca Stone · Thehackingpost

Previous outages related to CDN or the North American infrastructure have similarly affected Microsoft 365 services. Notably, in January 2026, an outage was attributed to North American infrastructure issues, affecting Outlook, Defender, and Purview simultaneously. Another incident in February 2026 caused a three-hour disruption in accessing the Microsoft 365 Admin Center.

While a complete list of impacted services for this incident is not yet available, past outages have affected Teams, Outlook, SharePoint Online, Exchange Online, and the Microsoft 365 Admin Center.

Recommended Actions for Affected Organizations

Monitor the Microsoft 365 Service Health Dashboard in the Admin Center for real-time updates. Utilize the Microsoft 365 Status page ( status.microsoft365.com ) and Microsoft's official X account for live incident tracking. Implement backup administrative access procedures if the Admin Center remains inaccessible. Review internal CDN dependencies for SharePoint and update references from the legacy CDN domain before its planned retirement in April 2026.

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As of now, Microsoft has not confirmed a resolution time. Engineers continue to analyze telemetry data across affected services while the incident remains open.

Based on reporting by Cyber Security News.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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